Etonogestrel implant failure in a woman taking thyroid hormone replacement: A case report

Alice Moylan; Jewel Brown; Melissa J. Chen; Mitchell D. Creinin

Case Reports in Women's Health (Mar 2025)

Etonogestrel implant failure in a woman taking thyroid hormone replacement: A case report

Alice Moylan,
Jewel Brown,
Melissa J. Chen,
Mitchell D. Creinin

Affiliations

Alice Moylan: University of California, Davis School of Medicine, 4610 X St., Sacramento, CA 95817, USA
Jewel Brown: Department of Obstetrics and Gynecology, University of California, Davis Health, 4860 Y Street, Suite 2500, Sacramento, CA 95817, USA
Melissa J. Chen: University of California, Davis School of Medicine, 4610 X St., Sacramento, CA 95817, USA; Department of Obstetrics and Gynecology, University of California, Davis Health, 4860 Y Street, Suite 2500, Sacramento, CA 95817, USA
Mitchell D. Creinin: University of California, Davis School of Medicine, 4610 X St., Sacramento, CA 95817, USA; Department of Obstetrics and Gynecology, University of California, Davis Health, 4860 Y Street, Suite 2500, Sacramento, CA 95817, USA; Corresponding author at: 4860 Y Street, Suite 2500, Sacramento, CA 95817, USA.

Journal volume & issue: Vol. 45
p. e00687

Abstract

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The etonogestrel implant is known to have high contraceptive efficacy for up to 5 years. This case report describes etonogestrel implant failure during year 4 of use in a patient with a normal body mass index. The patient was receiving thyroid hormone replacement after a thyroidectomy and was found to have iatrogenic thyrotoxicosis in the months preceding pregnancy. Further study of the effects of thyroid hormone on etonogestrel metabolism are indicated.

Published in Case Reports in Women's Health

ISSN: 2214-9112 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Medicine: Surgery; Medicine: Gynecology and obstetrics
Website: http://www.journals.elsevier.com/case-reports-in-womens-health/

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Abstract

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